Something mysterious is killing 11,000 nearby galaxies

Something mysterious is killing 11,000 nearby galaxies
New research published January 17, 2017 by a global team of researchers focused on 11,000 relatively nearby galaxies and asked why their gas — their lifeblood for the formation of new stars — is being violently stripped away on a widespread scale. The answer, according to these scientists, relates to the great halos of dark matter thought to surround galaxies and paints a picture of these galaxies falling through these larger halos, having their star-forming gas removed in a fast-acting process called ram-pressure stripping.http://www.businessinsider.com/ram-pressue-stripping-killing-11000-nearby-galaxies-2017-1